/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.alibaba.compileflow.engine.process.preruntime.converter.impl;

import com.alibaba.compileflow.engine.definition.bpmn.BpmnModel;
import com.alibaba.compileflow.engine.process.preruntime.converter.FlowModelConverter;
import com.alibaba.compileflow.engine.process.preruntime.converter.impl.parser.model.FlowStreamSource;
import com.alibaba.compileflow.engine.process.preruntime.converter.impl.parser.support.bpmn.BpmnStreamParser;

import java.io.OutputStream;

/**
 * @author yusu
 */
public class BpmnModelConverter implements FlowModelConverter<BpmnModel> {

    public static BpmnModelConverter getInstance() {
        return BpmnModelConverter.Holder.INSTANCE;
    }

    @Override
    public BpmnModel convertToModel(FlowStreamSource flowStreamSource) {
        return BpmnStreamParser.getInstance().parse(flowStreamSource);
    }

    @Override
    public OutputStream convertToStream(BpmnModel model) {
        //TODO
        return null;
    }

    private static class Holder {
        private static final BpmnModelConverter INSTANCE = new BpmnModelConverter();
    }

}
